Dry-kiln



0. w. AND w. DEGEN.

DRY KILN.

APPLICATION FILED AUG'9|'19lB.

1,332, 1 64. Patented Feb. 24, 1920.

INVENTORS vwpzam BY WALTER Dzam fie WW ATTORNEY units of the UNITED STATES PATENT OFFICE.

OTTO W. DEGEN, F ALAMEDA, AND HALTER DEGEN, OF SAN FRANCISCO, CALIFORNIA.

. DRY-KILN.

insaica.

Specification of Letters Patent;

Patented eb. 24., 1920.

Application filed August 9, 1918. Serial No. 249,180.

,Al'jl States, residi at Alameda and San Franm cisco, respectively, in the counties of Alai'neda and San Francisco, State of California, have in nted a new and useful Dry Kiln, of which the following is a specifica- 131011 in such full and clear terms as will enable those skilled in the art to construct and use the same.

This invention relates to a an object of the invention is to produce a kiln of an exceedingly simple form which will be capable of usi. g" all of. the heat fire employed if desired.

Another object of t 1c iuvcn on is to provide means whereby the air delivered to the kiln may be heated without coming in. direct contact with the flames.

Another object of the invention is to provide means whereby the cars may be removed from the kiln without the loss of an undue quantity of heated air in the dry-- ing chamber.

Another object of the invention is to deliver the air to the drying chamber in such a manner as to pass entirely through the body of the material being dried, thereby most ciiiciently abstracting the water therefrom.

lVhile the apparatus is shown in conjunction with cars and trays, it will be apparent that any product may be equally well treated, as for instance, vegetables, fruit, meat, fish, lumber, plaster boar clothing, paper and a large number of other items.

ther objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the drawings in which the same reference numeral is applied to the same portion throughout, but we are aware that there may be modifications thereof.

Figure 1 is a side elevation in sectionshowing the furnace and kiln with one car ready for removal and two cars of trays in process of being dried.

Fig. 2 is a plan View partly in section of the complete apparatus, and

Fig. 3 is a transverse sectional view of the flue adjacent dampers for preventing the smoke from passing to the drier.

The numeral 1 represents the fire box of the furnace which has grate bars 2 and may be heated by an oil burner 3 or by any the loss of heat.

desired fuel. 4 indicates thedoor of the fire box. Extending away from the fire boxls a flue made of a suitable fire resisting.

brick and covered over with a layer of earth or sand 6, for the purpose of retaining the 1 heat. 7

At the end of the flue there is ,awall 7, adjacent which the line has a chimney S with a damper 9 therein.

At a short distance from the furnace there is a fan 10 driven by a motor 11 from which fan, a duct or flue 12 extends into thcfire box and through the. fire 5 the continual supply of incoming cold air preventing the flames of the fire box or burner from seriously injuring the fresh air duct.

The flue 5 extends through the wall 7 below the ground level and it is suitably insulated to preventthe loss of heat as shown at 13. The duct 12 passes through the wall 7 and extends into a flattened out discharge pipe 14. This pipe has a damper 15 above it and a damper 16 below it which dampers are operated by suitable handles 17, and allow the products of combustion to pass into the drier if they are of such a nature as not to interfere with the materials being dried. If fluids are being dried and the products of combustion are deleterious as they may be with some kinds of fuel, the dampers 15 and 16 are closed and the damper 9 is opened to permit the smoke to pass out the chimney 8.

The air duct 5 passes into the dry room 18 at one end thereof. The dry room is formed of suitable studding- 19, provided with a lining 20 and outside cover 21 to prevent Ceiling joists 22 with an inside lining 23 and an outer cover 24 form the roof of the dry chamber.

The dry chamber has doors 25, 26 and .27 which move in slides 28, 29 and 30,

counterbalances 31, 32 and 33, two for each door being used to assist in lifting the doors.

At the opposite end of the dry chamber from the inlet flue 5 there are two outlet fiues 34 and 35. The openings into the outlet flues are placed near the floor so that only the cooler air will escape from the drying chamberthereby preventing an undue loss of heat.

A track extends through the dry chamber and another track 41 extends outside the chamber, these two tracks being connccted at the points 42 and 43 for the purpose of shifting the cars from one end of the dry chamber to the other as maybe re uired.

n operation the dry chamber may be long enough to receive a number of cars which are-placed therein through the door 27. As the material on the trays dries it is moved forwardly until completely dried, whereupon the door 26 is raised to permit the car to be raised in the space between that door and the door 25, whereupon the 'door- 26 is closed and the door is opened,

thereby making it possible to remove the car without disturbing the air conditions within the dry kiln.

Having thus described our invention what we claim as new and desire to secure by Letters Patent of the United States is as follows, express reservation being made of permissible modifications:

duct leading thereinto from below, a furnace having a flue and chimney, a sheet metal air supply duct extending into the furnace fire box and into the air supply duct of the drier, and dampers in the air duct and chimney to permit the products of combustion and smoke to pass to the drier or to pass through the chimney, at will.

2. A drier comprising a chamber, an air duct extending thereinto from below, a furnace having a flue connected with said duct, a chimney for the furnace, a fresh air duct extending into the furnace fire box and into the flue leading to the dry chamber, dampers in the air supply duct, a chimney to permit the products of combustion to escape through said chimney or to be blown into the dry chamber, and means to force air through the air pipe into the drier.

In testimony whereof we have hereunto set our hands this 2 day of August A. D.

Y 1918. 1. A drier comprising a chamber, an air OTTO WV. DEGEN. WALTER DEGEN. 

